gnutls_x509_cr...extension_data2(3)

💖 NAME 💖

gnutls_x509_crt_get_extension_data2 — it's an API function, bestie, and it's here to hand you the raw DER-encoded data of a certificate extension. Yes, the actual bytes. Iconic.

This is one of the gnutls_x509_cr...extension_data2(3) girlies, from the gnutls fam. 🎀

---

✨ SYNOPSIS ✨

#include <gnutls/x509.h>

int gnutls_x509_crt_get_extension_data2(gnutls_x509_crt_t cert, unsigned
indx, gnutls_datum_t * data);

---

🫶 ARGUMENTS 🫶

• gnutls_x509_crt_t cert — okay so this should contain a gnutls_x509_crt_t type. That's the certificate we're snooping through, no cap.
• unsigned indx — specifies which extension OID to read. Wanna start from the very beginning? Use (0) to get the first one. Literally index zero energy. 👑
• gnutls_datum_t * data — this lil baby will contain the extension DER-encoded data. That's where the goods go. 🍓

---

🌸 DESCRIPTION 🌸

So what does this function actually do? It will return the requested by the index extension data in the certificate. The extension data will be allocated using gnutls_malloc(). 🦋

Heads up: because it's gnutls_malloc() doing the allocating, you're responsible for that memory, bestie. Don't just leave it vibing there.

And if you wanna know which OID you're looking at? Use gnutls_x509_crt_get_extension_info() to extract the OID. That's your girl for the metadata. 💅

---

💀 RETURNS 💀

On success, GNUTLS_E_SUCCESS (0) is returned, otherwise a negative error code is returned. Slay. ✨

But listen — if you have reached the last extension available, GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE will be returned. That's the polite way of saying "that's it, there's no more, go home." 😭 No more extensions. Periodt.

---

🙈 REPORTING BUGS 🙈

Found a bug? Not the cute kind? Report bugs to <bugs@gnutls.org>. 📧

Home page: https://www.gnutls.org

---

🌈 COPYRIGHT 🌈

Copyright © 2001-2023 Free Software Foundation, Inc., and others.

Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved. (Yes, that's genuinely generous of them. Respect. 🫶)

---

⭐ SEE ALSO ⭐

The full documentation for gnutls is maintained as a Texinfo manual. If the /usr/share/doc/gnutls/ directory does not contain the HTML form, visit

https://www.gnutls.org/manual/

---

That's the whole page, bestie — gnutls 3.8.13, straight from the gnutls_x509_cr...extension_data2(3) manual. Go read your extensions, you main character. 💜✨